Explanation of the above output:
The Drive column shows the drive letter.
The Type column shows the file system type of the partition.
The Opts column shows what options were used while mounting the device on the drive.

Mounting is the operation of logically associating a drive name or a path name with a file system (on a partition or physical drive), and making it accessible under that drive or path name.

For this run, it shows that:
C drive is an NTFS partition (Windows NT File System) and is mounted in read-write mode and is a fixed disk;
E drive is a CDFS partition (CD-ROM File System) and is mounted in read-only mode.